Serrapeptase

Supplements · Cardiovascular & Anti-Inflammatory Herbs · Supplement, Typed Supps

An enzyme first found in silkworms, used in parts of Asia and Europe for decades as an anti-inflammatory, though the modern clinical evidence for it is thin.

Stage by stage

Intake (Enteric-coated tablet): Taken to survive stomach acid before absorption.
Small intestine (Absorbed): Enzyme absorbed into the bloodstream.
Bloodstream (Circulates): Carried to sites of tissue inflammation.
Inflammatory proteins (Proposed proteolytic site): Proposed to break down inflammatory debris and fibrin, though clinical trial evidence for this remains thin.

What the evidence supports

Reducing pain, swelling or inflammation after surgery or injury — insufficient evidence. A 2013 systematic review found only a handful of low-bias randomized trials among the studies available, and concluded existing evidence is insufficient to support serrapeptase as an analgesic or anti-inflammatory supplement, despite decades of clinical use in parts of Asia and Europe.
Improving symptoms of sinusitis or reducing mucus viscosity — insufficient evidence. Some small older trials suggested a mucolytic effect, but they're dated, small, and haven't been confirmed by rigorous modern trials.
Evidence on Increased bleeding risk, particularly with anticoagulant or antiplatelet drugs — limited evidence. As a proteolytic enzyme, serrapeptase is flagged in drug-interaction references for a plausible additive bleeding risk with warfarin, clopidogrel, aspirin, and even other supplements like fish oil or turmeric; documented cases are limited but the caution is consistently repeated across clinical references.

Typical dose

10–60 mg daily (often expressed as 20,000–60,000 SU, serrapeptase units), typically split into two or three doses on an empty stomach.

Upper limit: No established UL.

Timing

Typically taken on an empty stomach in enteric-coated form.

Time to effect

Unclear: The underlying trial evidence is too thin to establish a reliable time-to-effect.

Common myth

“Decades of use in Japan and Europe prove serrapeptase works.” In reality: A systematic review of the actual randomized trial evidence found it insufficient to support serrapeptase as an anti-inflammatory or analgesic supplement — long regulatory and traditional use isn’t the same as strong clinical proof.